Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3f8lA 4zsiA 4zsiB 3f8lA 100 73 74 4zsiA 73 100 99 4zsiB 74 99 100 FOLD SIMILARITY (Z-SCORE) 3f8lA 4zsiA 4zsiB 3f8lA 32.4 24.7 24.9 4zsiA 24.7 32.8 28.6 4zsiB 24.9 28.6 32.9